The dora-mu represented an immense, ocean-dwelling organism originating from the Yuuzhan Vong's native galaxy. Its body was shielded by a multitude of elongated, greenish chitinous plates that demonstrated resistance to blaster fire and possessed self-repairing properties.
Shapers utilized its scales in the construction of protective plating for the Vangaak, an underwater vessel. Uniquely, these scales remained viable even after detachment from the dora-mu, integrating with the Vangaak's framework and drawing sustenance from the living vehicle.